/**
 *  JSimProd - Java simulation code for production processes
 *  Copyleft Jorge Mira Yagüe <jorge.mira.yague@gmail.com>
 *  Universidad de Alicante 2009
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
package lib.model.queue;

import java.util.Random;
import lib.plan.Item;

/**
 * The Random Selection of Service (RSS) queue is a kind of queue where the
 * items are added to the queue in a random order. This queue doesn't use
 * any kind of priority to add the items.
 * @see Queue
 * @see Item
 * @author Jorge Mira Yagüe
 */
public class RSSQueue extends Queue {

    /**
     * Builds a RSS queue
     */
    public RSSQueue() {
        super(QueueType.RSS);
    }

    /**
     * Adds the item to the queue in a random order
     * @param item the item to be add
     */
    @Override
    public void add(Item item) {
        Random r = new Random();
        int index = r.nextInt(size + 1);
        elements.add(index, item);
        size++;
    }
}
